Automatic door-opener.



PATENTED JULY 14, 1908.

No. 893,022. E. SIBDLE.

AUTOMATIC DOOR OPENER. APPLICATION FILED MAR. 16, 1908.

. To all whom it may concern:

- oniriinismras PATENT OFFICE,

. j EDWARD-SIEDLE, or YQNKERS, NEW YORK. 1

AUTOMATIC DOOR-OPENER.

.Be it known that I, EDWARD SIEDLE, a

.citizen of the United States, and a resident of Ludlow, Yonkers, in the county of Westchester and State'of New York, have made a certain new and useful Invention Relating to Automatic Door-Openers, of which the following is a specification, taken in connection with the accompanying drawings, formg art of the same. v

ers for doors and the like, and relates especially to automaticm'eans by which a person walking toward a door. thereby opens" the same and holds the door in open position until he has passed through the door. 0 ening.

In the accompanying 'drawin s s owing an illustrative embodimentof t 's .invention and in which the same'reference numers als refer to similar parts in the several figures, Figure 1 is'a perspective view. showing the door in open position, Fig.. 2 is a horizontal sectional view, parts being omitted,

Fig. '3 is an enlarged detailed sectional view,

the parts bein in substantially the position shown in i 1, and 'Fig. 4 is another enlarged sectiona view, the door being indicated in closed position, i

In the illustrative embodiment of this. invention shown in the drawin s, the door 1 is- 'indicated as rigidly secure -to a suitable pivot orpivots 7, by the use of any desired means, such as the strap 31. The pivots operate in suitable bearings in the door casin 2, so that the door may swing open in eit er direction. I Suitable means may be employed to normally close the door such I for example as the closing cam 25 which may be rigidly secured to the pivot 'bearing 29 and engaged by a closing wheel ,28 or other device moifiited on the stud 30, secured to the door pivot 7. The weight of the door normally tends to bring this closing wheel .28 into engagement with the lowest part of the closin cam 25, so that the door is normall hel in closed position, althoughzit is yiel ingly mounted so as to be opened in either direction by the automatic opening devices.

Suitable o erating members or plates/1 5 are mounte on. either side of the threshold 6, so as to be in the path of a person moving throu h the doorwa The-plate 4 is mounted to ave a limite yieldin -movement in a vertical direction, and as in icated, the inner edge of the plate is secured to suitable hinges I Specification of Letters Patent. Application filed March 16, 1908. Serial No. 421,551;

's invention relates to automatic open- 23, the other operating plate 5 being similarly mounted on hinges 24'. The outer end of the plate 5, when pressed downward by the weight of a person ste ping uponv it actuates a suitable operating ever 9 which as indicated is pivoted in a suitable fulcrum piece 22, the inner end of this lever 9 passing under and bein adapted to raise the operating arm 11, as. in icated in Figs. 2 and 4. This operatin arm maybe rigidly secured to the o eratmg pin 17 'pivotally mounted in suitab e Patented J'u1y14, 1908.

,brackets 45, 20 and a spiral spring 18, may

operp ate 4.

end of the lever 8 ivoted at-21 so as to raise its inner end and t ereby raise the operating arm 10 and roll-l1? mounted thereon, this arm being similarly-mounted desired upon the pin 16, pivoted in the brackets 14, 19 and engaged by the spring 18 which normally depresses the free end of the arm 10 and t erethe operating plate 4. a t

As will be evident, a person stepping on the outer end of the operating plate 5 thereby raises the o erating roll 13 into forcible engagement with the operating cam 26. TlllS action gently swings the door 1 forward in the same direction as the erson walking toward it, the inclined face oi the operatin cam 26 sliding downward over the roll unt1 the arts assume such a position as is indicated in lgs. Land3, the lever and arm being preferably of resilient material so as to give a yield ing character to this actuation. At this point, the person'would ste across the threshold upon the other operating .plate 4, this'action slmilarly raising the operating roll 12 in a forcible manner'against the cam 26, but if,-as indicated, the lower point 36 of this cam has then passed beyond the roll 12, this roll engages the same inclined working face of-the cam as the roll- 13, suchactiontending to y releases the free ends of the lever 8 and swing the cam and door in the same direction so that the door will be held open until the person has passed entirely through the Same and stepped off of the o crating plate 4. Thereupon, the returning evices such as the springs 18, raise-the operatingplates and the cam'26 lies between the two operating rolls 12,13, which cooperate with the opposite inclined worl'ring faces of this cam, so that either one of the rolls being raised by a person stepping on the corresponding operating plate, will'tend to open the door by swinging it away from the operating plate actuated, so that the door is automatically swung open in either direction away from a person walking towards it'over the operating plates.

Having described this invention in connection with an illustrative embodimentthereof, to the details of which the invention is not, of course, to be limited, what is claimed as new and what is desired to be secured by Letters Patent isset forth in the appended claims;

1. In, automatic door 0 eners, a door mounted upon a substantial y vertical door pivot, a closing wheel on said door pivot, a closing cam cooperating with said wheel to normally close said door and hold the same yieldingly in closed position, an operating cam having oppositely inclined worklng faces mounted on said pivot, hinged operating plates on either side of said door, eac of said plates having operative engagement with a ever pivoted beneath the same, an operatin arm mounted on afpivoted pin and engage by theother end 0 said operating lever, an

r operating roll carriedby the free end of each side of said door eac said arms and normally engaging the op.-

-posite inclined faces of said operating cam, "and yielding means on said pins tonormally hold said 0 erating plates in raised position, whereby w en a person steps on either of said operating plates said door is automatically swung open away from him and held in open positionuntil he steps off of the other of said plates.

2. In automatic door 0 eners, a door mounted upon a substantial y vertical door pivot, a closing cam, closing means on said pivot cooperating with said cam to normally close said door and hold the same yieldingly in closed position; an opxerating cam havin oppositely inclined wor ing faces mounte on said door, hinged operatingdplates on either of Sa operative engagement with a lever mounte beneath the same, an operatin arm mounted on a pivoted pin and engage by said lever,

an operating roller carried by each of said arms and normally engaging the opposite faces of said 0 erating cam, and yielding means to norm y hold said operating plates In this position, as indicated, the point or lower portion 36of plates havin steps on either of said operating plates said door is automatically swung open and held in open position until he steps off of the other of said p ates.

3, In automatic door openers, a door mounted upon a door ivot, means to normally close said door an hold the same yieldingly in closed osition, an operating cam having opposite fy inclined working faces mounted on said door, movably mounted operating plates on either side of said door, op erating arms carrying rolls to normally ongage the opposite inclined faces of said operating cam and means to actuate each of said arms from the corresponding operating plate.

4. In automatic door openers, a door having a door pivot, an operating cam having oppositely inclined working faces mounted on said door, movably mounted operating plates on either side of said door, operating arms normally engaging the opposite inclined faces of said operating cam and means to actuate each of said operating arms from the corresponding 0 erating plate.

5. In automat1c oor openers, a door having a door pivot, an operating cam having oppositel inclined working faces mounted on said oor, operating arms normally engaging the opposite inclined faces of said operating cam and means .to actuate one of said arms from each side of said door.

6. In automatic door openers, a door having a door pivot, means to normally close said door and yieldingly hold the same in closed position, an operating cam having oppositely inclined working faces mounted on said door, resilient operating arms normally cooperating with the opposite inclined faces of said operating cam, means to actuate one of said arms from each side of said door to raise said am into operative engagement with said cam and cause the weight of said door to exert an opening tendency in connection with said cam.

7. In automatic door openers, a door having a door pivot, means to cause the weight of said door to normall close the same and hold the same yielding y in closed position, an operating cam having oppositely inclined working faces mounted on said door, operating arms normally cooperating with the opposite faces ofsaid cam and means to actuate one of said arms from each side of said EDWARD SIEDLE Witnesses:

HARRY L. DUNCAN, JEssIE B. KAY. 

